Tps Question

Ok thanks I just wanted to make sure that's what it was causing it. Wasn't sure if that would make the rpms hang like that. Apparently none of the parts stores can get it, go figure. I'll call ford in the morning. Thanks for the help

Which fuse would blow? I didn't see any blown ones when I checked over them. It has coil on plugs. What do you mean by unplugging all of the wires? Do you mean un plug each coil pack one at a time while its running?

Ok so I finally got the scanner hooked up and here are some of the readings I wrote down.
IAC DUTY CYCLE=48%
MAF=9.5-9.98(GM/S)1.06-1.1volts
IAT=143°F, 1.14volts
ECT=192°F
O2s11=932mv
O2s21=964mv
One menu said the fuel rail pressure was 37.6psi and another said it was 57psi
What do you think?

Founding Member

Ok so I finally got the scanner hooked up and here are some of the readings I wrote down.
IAC DUTY CYCLE=48%
MAF=9.5-9.98(GM/S)1.06-1.1volts
IAT=143°F, 1.14volts
ECT=192°F
O2s11=932mv
O2s21=964mv
One menu said the fuel rail pressure was 37.6psi and another said it was 57psi
What do you think?

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The fuel pressure should be stable. 57psi is pretty high but you do have an after market pump. My money its the tune, didnt realized you were that modified. Are you sure your throttle isnt sticking?

SN Certified Technician

The IAT of 143 degrees seems out of whack. What was the outside temperature at the time?

Tell us about any mods. Especially CAI. I'm interested to know if the MAF is position has been changed from the stock location. Sometimes the "index" of the MAF can create unstable air flow which will lead to an unstable MAF signal.

What have you done to confirm that the replacement FRPS is good? The unstable fuel pressure concerns me.